"Snap incredible photos with the Vanguard Alta BH-100 Multi-Action Ball Head. Constructed of durable, yet lightweight aircraft aluminum with a tough anodized finish, this ball head offers lasting performance and rapid, intuitive, and smooth positioning for superior reliability. The Arca-Swiss quick release plate features dual 3/8"" to 1/4"" reducer bushings, and 2 independent leveling bubbles for precise, level shots. Plus, 3 locking knobs with aggressive grip texturing offer improved overall control and smooth panning. The main knob is oversized to make locking or tilting easy and smooth, while the friction-control knob offers superior movement control, and the panning knob, coupled with spirit level and 360 marking on the ball head rotating base, makes for incredibly stable panoramic views. Max Wt. Cap.: 22 lbs. Manufacturer model #: ALTA BH-100. Aircraft aluminum construction Anodized finish for improved durability Arca-Swiss quick release plate with 1/4"" D-ring screw Dual 3/8"" to 1/4"" reducer bushings 2 independent leveling bubbles 3 locking knobs with non-slip grip"